U.S. patent application number 10/380542 was filed with the patent office on 2004-03-18 for cooking appliance with removable cooking plate by locking and unlocking device.
Invention is credited to Patenotre, Yves.
Application Number | 20040050256 10/380542 |
Document ID | / |
Family ID | 8854357 |
Filed Date | 2004-03-18 |
United States Patent
Application |
20040050256 |
Kind Code |
A1 |
Patenotre, Yves |
March 18, 2004 |
Cooking appliance with removable cooking plate by locking and
unlocking device
Abstract
The invention concerns a cooking appliance comprising a shell
(4) and a control knob (7) mobile relative to the shell (4) which
comprises a heating element and bears a removable hot plate fixed
on the heating element by at least one means (1) and releasable by
moving said means (1). The invention is characterised in that the
appliance comprises a lever (8) forming a crank-shaft assembly
pivoting about a pin (12) whereby it is fixed to the shell (4); one
part of the lever (20) co-operates with the knob (7) and another
part (19) drives the locking means (1) when the knob is stressed
and acts on the lever (8).
Inventors: |
Patenotre, Yves; (Desingy,
FR) |
Correspondence
Address: |
YOUNG & THOMPSON
745 SOUTH 23RD STREET 2ND FLOOR
ARLINGTON
VA
22202
|
Family ID: |
8854357 |
Appl. No.: |
10/380542 |
Filed: |
October 6, 2003 |
PCT Filed: |
September 7, 2001 |
PCT NO: |
PCT/FR01/02793 |
Current U.S.
Class: |
99/331 ; 99/349;
99/372 |
Current CPC
Class: |
A47J 37/0611
20130101 |
Class at
Publication: |
099/331 ;
099/349; 099/372 |
International
Class: |
A23L 001/00 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 15, 2000 |
FR |
00/11808 |
Claims
1/ A cooking appliance comprising at least one shell (4), and at
least one control button (7) mounted to move relative to the shell
(4), the shell (4) incorporating a heater element (3) and carrying
a removable hot plate (2) which is fixed to said heater element (3)
via at least one securing means (1), and which is releasable by
moving said means (1), said cooking appliance being characterized
in that it further comprises at least one lever (8) forming a
crank-shaft assembly mounted to turn about an axis (12) via which
it is fixed to the shell (4), one portion (20) of the lever (8)
co-operating with the control button (7) and another portion (19)
driving the securing means (1) when the control button (7) is
pushed and acts on the lever (8).
2/ A cooking appliance according to claim 1, characterized in that
the lever (8) has a central body (18) disposed along the axis (12),
turning about said axis, and situated between the portions (20, 19)
co-operating with the control button (7) at one end, and driving
the securing means (1) constituted by a catch (1) mounted to tilt
about the axis (12) at the other end.
3/ A cooking appliance according to claim 2, characterized in that
the lever (8) is a metal wire bent to constitute the portions (20,
19) co-operating with the control button (7) at one end, and
driving the catch (1) at the other end, the two portions, together
with the portion of the metal wire that interconnects them and that
constitutes the central body (18) of the lever, forming a
crank-shaft assembly.
4/ A cooking appliance according to any one of claims 1 to 3,
characterized in that the control button (7) is mounted to move in
translation in a recess (16) provided in the shell (4) and
perpendicular to the outside surface of said shell.
5/ A cooking appliance according to any one of claims 1 to 4,
characterized in that the two portions (20, 19) of the lever (8)
are the ends of said lever.
6/ A cooking appliance according to any one of claims 1 to 5,
characterized in that it has two shells (4) hinged together about
an axis (5) such that the removable hot plates (2) carried by the
shells (4) define a space (21) between them that is suitable for
receiving any food to be cooked.
7/ A cooking appliance according to any one of claims 1 to 6,
characterized in that the control button (7) is disposed at some
distance from the hot plate (2) that it makes it possible to
release, so that the user cannot touch the plate when said user
actuates the control button (7).
8/ A cooking appliance according to any one of claims 1 to 7,
characterized in that, under the hot plate (2) and on the same side
as the heater element (3), said appliance further comprises a
spring (15) which raises the hot plate (2) relative to the shell
(4) when the securing means (1) are disengaged therefrom.
9/ A cooking appliance according to claim 8, characterized in that
it further comprises a regulation system made up of a probe (13),
of a thermostat (14) and of the spring (15) which presses the probe
(13) against the hot plate (2).
10/ A cooking appliance according to any one of claims 1 to 9,
characterized in that it further comprises at least one return
spring (9) for returning the securing means (1) to the locking
position in which they lock the plate (2) so long as the control
button is not pushed (7).
Description
[0001] The present invention relates to cooking appliances having
cooking plates or "hot plates" that are made removable by securing
and releasing devices.
[0002] The technical sector of the invention is the field of "small
household electrical appliances".
[0003] The invention essentially applies to appliances of the
grill, waffle-iron, or sandwich-toaster type. Such an appliance
comprises two hot plates hinged together to define between them a
space for receiving food to be cooked, each hot plate being heated
by a respective electric heater element in contact with the
plate.
[0004] Making such hot plates removable opens up possibilities for
making multi-purpose appliances that can be transformed into
sandwich toasters, waffle irons, or grills merely by changing the
hot plates. For that purpose, the hot plates are held stationary
inside shells by securing means that can be moved to release said
plates and to interchange them. However, manipulating such means is
impractical and inconvenient, and also involves the risk that the
user might suffer burns. To mitigate that drawback, certain
appliances are equipped with catch systems making them easier to
use, but such systems are generally costly to make.
[0005] An object of the present invention is to mitigate the
above-mentioned drawbacks by making it more practical to change the
plates, with as few parts as possible, making it possible to reduce
the manufacturing and assembly costs, while reducing the danger of
burns.
[0006] This object is achieved with a cooking appliance comprising
at least one shell, and at least one control button mounted to move
relative to the shell, the shell incorporating a heater element and
carrying a removable hot plate which is fixed to said heater
element via at least one securing means, and which is releasable by
moving said means. In the invention, the appliance further
comprises at least one lever forming a crank-shaft assembly mounted
to turn about an axis via which it is fixed to the shell, one
portion of the lever co-operating with the control button and
another portion driving the securing means when the control button
is pushed and acts on the lever. The lever has a central body
disposed along said axis, turning about said axis, and situated
between the portions co-operating with the control button at one
end, and driving the securing means constituted by a catch mounted
to tilt about said axis at the other end.
[0007] In a preferred embodiment, the lever is a metal wire bent to
constitute the portions co-operating with the control button at one
end, and driving the catch at the other end, the two portions,
together with the portion of the metal wire that interconnects them
and that constitutes the central body of the lever, forming a
crank-shaft assembly.
[0008] The result is a novel cooking appliance having hot plates
that are made removable by a hot plate securing/releasing device
which achieves the above-mentioned object by means of a
sub-assembly made up of only three parts which correspond to a
control button, a lever or a transmission, and a securing means for
each plate, each securing means operating by means of a locking
catch.
[0009] The control button, which is of ergonomic shape, is placed
on the appliance so as to be practical to use, visible, and quite a
long way away from the hot plates so as to avoid burns. It thus
makes it possible to release the plates and to interchange them
depending on the food that is to be prepared. The resulting cooking
appliance is a multi-purpose appliance that can, for example,
perform the functions of grills, waffle irons, sandwich toasters,
etc.
[0010] Other advantages of the present invention could be
mentioned, but the advantages mentioned are sufficient to prove the
novelty and utility of it. The following description and the
accompanying drawings give an embodiment of the invention but are
in no way limiting. Other embodiments are possible within the ambit
and scope of the present invention. In the drawings:
[0011] FIG. 1 is a section view of a cooking appliance equipped
with a device of the present invention;
[0012] FIG. 2 is a fragmentary perspective view of a shell of the
appliance shown in FIG. 1, without the corresponding hot plate and
without the accessories other than the securing/releasing device of
the invention;
[0013] FIG. 3 is a section view on the plane III-III' of FIG. 2,
showing the device in the unlocking/releasing position; and
[0014] FIG. 4 is the same section view as the view in FIG. 3, with
the device being in the securing/locking position.
[0015] In the embodiment shown in FIG. 1, the cooking appliance is
a multi-purpose appliance of the toasted-sandwich/waffle/grill
type, constituted by two shells 4.sub.1, 4.sub.2, each of which
incorporates a heater element 3.sub.1, 3.sub.2, and also carries a
removable hot plate 2.sub.1, 2.sub.2. Said shells 4 are hinged
together about a hinge axis 5 so that said hot plates 2 carried by
said shells define a space 21 between them that is suitable for
receiving any food to be cooked.
[0016] The top shell 4.sub.1 can be raised to access said space 21
by acting on the handle 6 to cause said shell 4.sub.1 to pivot
about the hinge axis 5. Reflectors 11.sub.1, 11.sub.2 are disposed
between the heater elements 3.sub.1, 3.sub.2 and the inside
surfaces of the shells 4.sub.1, 4.sub.2, so as to reflect the heat
and concentrate it on the space 21.
[0017] The appliance of the invention is provided with at least one
control button 7 mounted to move relative to each shell 4 and with
at least one lever 8, one portion 20 of which co-operates with said
button 7 and another portion 19 of which drives securing means 1
for the hot plate 2 when said button is pushed to act on said lever
8.
[0018] The sub-assemblies of the devices for securing/releasing or
locking/unlocking the hot plates 2 are preferably identical in the
bottom shell 4.sub.2 and in the top shell 4.sub.1.
[0019] Said control buttons 7 are mounted to move in translation in
recesses 16 provided in respective ones of the shells 4 and
allowing the button to move linearly and perpendicularly firstly to
the axis of rotation 12 defined below, and secondly to the outside
surface of the shell 4.
[0020] Preferably, said buttons are clipped into the front of the
appliance in one of the corners situated in the vicinity of the
opening in said appliance, such that, when the appliance is closed,
said buttons are no longer accessible, and such that, when the
appliance is open, said buttons are disposed at some distance from
the hot plates 2 that they make it possible to release so that the
user cannot touch the corresponding plate 2 when the user actuates
one of said buttons 7.
[0021] Under each button 7, a lever 8 is mounted whose portion 20
comes into abutment against it. Each button 7 is guided by two ribs
17 on respective opposite sides.
[0022] The means for securing each hot plate 2 are constituted by a
catch 1 that tilts about an axis 12, and said lever 8 has a central
body 18 disposed along said axis 12, turning about said axis, and
situated between the portions 20, 19 co-operating with said button
7 at one end and driving the catch 1 at the other end.
[0023] Said lever or transmission 8 is preferably a metal wire that
is bent to form arms directed laterally relative to the rectilinear
central body 18, and to constitute said portions 20, 19. Together
with the portion of the metal wire that interconnects them and that
constitutes the central portion 18, said two portions 20, 19 form a
crank shaft assembly, each bent portion transmitting via the
central body 18 to the other portion any turning moment that it
receives by means of any force applied to the arm that constitutes
it. The longer the arm, the further away from the body 18 forming
the axis of rotation the point at which the force is applied lies,
the larger the turning moment, and the easier the turning
movement.
[0024] Each transmission or lever 8 is laid and clipped in bearings
10 integrated into the shell 4 via its central body 18 forming an
axis of rotation. Each catch 1 is itself clipped to the bent
portion 19 of said lever 8 which is associated with it.
[0025] As shown in the accompanying figures, said two portions 20,
19 of each lever 8 are the ends of said lever, but in another
embodiment, the portion 19, for example, could be bent differently
and the body 18 of the lever 8 could continue beyond said portion
19, and could be guided to turn about its own axis, i.e. about the
axis 12, by another bearing situated on the other side of the catch
1 from the side on which the portion 20 is situated.
[0026] The appliance of the invention also includes at least one
return spring 9 for each securing means 1, the spring returning the
securing means to the locking position in which the corresponding
plate 2 is locked so long as the corresponding control button 7 is
not pushed, thereby holding the sub-assembly constituting the hot
plate securing/releasing device of the invention in position and
under stress.
[0027] The cooking appliance shown in the accompanying figures
further includes a spring 15 under the bottom hot plate 2.sub.2 and
on the same side as the heater element 3.sub.2, which spring raises
said hot plate 2.sub.2 relative to the shell 4.sub.2 when the
securing means 1.sub.2 are disengaged therefrom.
[0028] The spring 15 may be part of a regulation system made up of
a probe 13, of a thermostat 14, and of said spring 15 which presses
the probe 13 against the hot plate 2 when said hot plate is
locked.
[0029] In order to unlock each of the hot plates 2, it is necessary
to press on the respective control button 7. By means of the
transmission or lever 8 which then turns about the axis 12, each
catch 1 retracts by tilting about its own axis to allow the
corresponding hot plate 2 to pass, as shown in FIG. 3. The bottom
plate 2.sub.2 rises under pressure from the probe 13 of the
thermostat, and the top plate 21 comes free under its own
weight.
[0030] In order to lock said cooking plates 2 again after they have
been interchanged and/or cleaned, the lip 22 that constitutes the
rim of each plate 2 or that may be a lug and that is situated
opposite from the lip 23 that comes into abutment against a
respective one of the catches 1 is slid into any compatible recess
in the corresponding shell 4. The lip 23 of the plate 2 in question
then abutting against the catch 1 causes said catch to retract by
tilting back about the axis 12 in order to allow said plate to
pass, as shown in FIG. 3. Once the plate 2 is in position, the
catch 1, under drive from the return spring 9, returns to its
initial position and locks the plate 2.
* * * * *